Do the 914 CSP manifolds/runners for the IDF and DRLA have plenty of meat for porting without welding? Shooting for 220 CFM @25" with a 48mm valve. The heads are currently welded. I'm in the market for the CSP runners if they are beefy enough as-is.

I've CB manifolds that have been welded but can't give you and flow figures yet ,still waiting for the machinist to finish the valves . no one I know has the CSP manifolds . Try contacting Jakob at Get Back On Track , he has a Facebook site.

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